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Mathew Mendalin Narayana Badiadka Sreekumar Naracham Veedu Vipin Kuttamath 《Mikrochimica acta》2004,144(4):291-295
A rapid and sensitive spectrophotometric method is described for the determination of trace amounts of cerium using Variamine Blue (VB) as a chromogenic reagent. The proposed method is based on the reaction of cerium with potassium iodide in acidic medium to liberate iodine, which oxidizes Variamine Blue to give a violet colored species with an absorption maximum at 560nm. Beers law was obeyed in the range 2–10µg mL–1 of cerium. The molar absorptivity and Sandells sensitivity are found to be 1.65×104L mol–1cm–1 and 8.48×10–3µgcm–2, respectively. The proposed method has been successfully applied to the determination of cerium in alloy and synthetic mixtures. 相似文献
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Summary Complexes of transition metals with acetoacetanilide thiosemicarbazone, AatH2, have been prepared and characterized. The complexes were found to have the following stoichiometries: [Mn(Aat)(H2O)2]n; [Zn(Aat)(H2O)2]; [M(Aat)(H2O)], where M = CdII or HgII; [Cu(Aat)]n; [Ag(AatH)]; [M(AatH)2], where M = CoII or NiII, and [Fe(Aat)Cl(H2O)]n. The compounds have been studied for their possible antitumour activity against Ehrlich Ascites tumour cells in vitro. 相似文献
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